|Publication number||US4138039 A|
|Application number||US 05/728,930|
|Publication date||Feb 6, 1979|
|Filing date||Oct 4, 1976|
|Priority date||Oct 4, 1976|
|Also published as||DE2900094A1|
|Publication number||05728930, 728930, US 4138039 A, US 4138039A, US-A-4138039, US4138039 A, US4138039A|
|Inventors||Lewis A. Micallef|
|Original Assignee||Leeds And Micallef|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (44), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Fluid dispensing pumps for containers have been gaining in popularity and success and in particular plunger actuated pumps are now handling a wide variety of products marketed in the cosmetic, toiletry, food and household product fields. However, the vertical finger actuated plunger type of pump possesses several inherent disadvantages, drawbacks and inconveniences in regard to the dispensing of cosmetics, deodorants and perfumes.
Within the recent past there has developed an increasing need and demand for trigger actuated pumps. An example of a pump of this type that has proven to be eminently successful is disclosed in U.S. Pat. No. 3,749,290 granted July 31, 1973.
Needless to say, there is always a need for different pumps, but pumps of superior construction and efficient performance that are of relatively simple design and construction and costs that are not only comparable but preferably lower in cost, construction, manufacture and assembly.
It is, accordingly, among the principal objects of the present invention to provide a pump actuating system that is adapted to be associated with reciprocating plunger actuated dispensing pumps that permits the pump to be actuated in a more convenient and expeditions manner that is more conductive to the dispensing pattern selected.
Another object is to provide a pump actuating system of the foregoing type which permits vertical or coaxially dispensing of the container products in consequence of lateral actuation of a button or trigger; and consequently a pump actuating system that lends itself to more convenient dispensing of cosmetics such as deodorants and perfumes then heretofore possible by commercially available plunger type pumps.
A further object is to provide a pump actuating system that renders it possible to convert plunger actuated dispensing pumps into trigger pumps by translating lateral movement of the actuating system into vertical reciprocal movement of the plunger.
FIG. 1 is a perspective view of the pump actuating system of the present invention associated with the neck of a container having a plunger to a reciprocating pump;
FIG. 2 is an exploded perspective view of the pump actuating system with the pump plunger only fragmentarily shown;
FIG. 3 is an enlarged longitudinal sectional view of the pump actuating system as well as an exemplary plunger actuator reciprocating pump both associated with the neck of a container which is only fragmentarily shown;
FIG. 4 is a cross-sectional view taken along the line 4--4 of FIG. 3;
FIG. 5 is a view similar to FIG. 3 with the actuating system shown in the process of actuating the pump to cause the expelling of material from the pump chamber; and
FIG. 6 is a cross-sectional view taken along the line 6--6 of FIG. 5.
In the drawings, the reciprocating plunger actuator disensing pump 10 is shown disposed along the opening of a container 12 and is adapted to be conveniently and advantageously actuated by the pump actuating system 14 of this invention. The container 12 may assume the form of any conventional or commercial bottle or similar receptacle, made of glass, plastic or other suitable materials. The container may be used for holding and dispensing a wide variety of materials generally in liquid form as may be found on the markets today. These materials may possess different degrees of viscosity and may include oil, perfume or the like or pasty substances such as creams or the like. In the illustrated embodiment a cosmetic version of the invention is shown having particular application to deodorants and perfumes. It should be understood however, that the present invention is also suitable for household use, room deodorants and the like. As will be readily understood by those skilled in the art suitable modifications can be made to adapt the present invention to lotions and the discharge pattern can be directed at any angle for direction.
The pump 10 may assume the form of any known or commercially available vertically reciprocating plunger actuated pumps; and in this connection it may be a mechanical piston pump or elastomeric diaphragm pump 24. The illustrated exemplary pump 10 is disclosed in detail in U.S. Pat. No. 3,452,905 granted July 1, 1969 and for a better understanding of the construction and operation of this pump reference should be made to that patent. Suffice it to say, that upon downward vertical reciprocation of the plunger 16, subsequent to the priming of the pump 10, the material to be dispensed from the container 12 that is disposed in the pump chamber 18 will be expelled out through the plunger orifice 20. (See FIG. 5) Upon upward vertical reciprocation of the plunger 16, material within the container will be drawn into the pump chamber 18 to complete the pumping cycle.
Towards this end, the pump will include a relatively rigid base adapted to be supported across the opening of the neck of the container 12. The base 22 includes a lower opening which couples with a dip tube 25 in order that material within the container 12 may be pumped into the pump chamber 18. A check valve 26 closes the opening in the lower part of the base 22 and is closed during the dispensing of the material from the chamber 12 and is unseated to provide communication between the base opening and the material to be dispersed in the container. A relatively flexible and elastomeric diaphragm 24 has peripheral portions thereof and fluid tight engagement with the associated peripheral portions of the base 22. The diaphragm 24 is provided with a downwardly depending central boss 28 that defines a central opening. The plunger 16 has a lateral opening 30 that is adated to permit communication of the plunger passage 20 and the pump chamber 18. Surfaces of the plunger adjacent this opening 30 and associated surfaces of the boss 28 define a second valve for sealing the plunger opening during the filling of the pump chamber and for opening the plunger opening during the dispensing of the material to be dispensed from the pump chamber 18. The boss 28 is provided with a double cone configuration and the associated surfaces of the plunger 16 are similarly structured as shown in the drawings. Air network 32 permits the passage of air from the ambient into the container to replace the volume of the material to be dispensed which is drawn from the container interior into the pump chamber 18.
In operation, the plunger 16 is depressed to move the diaphragm 24, towards the base 22 to reduce the volume of the pump chamber 18 thereby pressurizing the material in the chamber. At the same time the upper valve defined by the interengaging surfaces of the boss 28 and plunger 16 is caused to open whereupon the material in the pump chamber is adapted to flow into the plunger passage 20. When the diaphragm 24 is moved in the opposite direction away from the base 22, upon retraction of the plunger, causes an increase in volume of the pump chamber 18. At the same time, the plunger opening 30 is closed by the boss 28 and the lower check valve 26 is opened to permit material in the container to enter the pump chamber 18. When the retraction of the plunger 16 is completed the lower valve 26 closes. The pump is now ready for its next pumping cycle.
The pump actuating system 14 facilitates the vertical reciprocation of the plunger 16 and consequently the actuation of the pump 10. The housing 32 forms a part of this system and also serves as a cap for both the pump 10 and the neck of the container 12. Towards this end, the lower end 34 of the cap includes internal threads 36 which mate with corresponding threads appearing on the neck of the container. Obviously other means of connecting these two parts are contemplated depending on the neck finish. In a somewhat similar fashion to that disclosed in the above-referenced patent, the cap 32 will include a transverse partition 38 having a central hole 40 which retains pump 10 in place and cooperates therewith in assuring proper pump function. The hole 40 conveniently receives therethrough plunger 16 and associated structure of the pump actuating system 14. In this connection, the pump actuating system 14 includes stem extension 42 coupled in any suitable fashion to the plunger 16. At the stem extension upper end a suitable nozzle 44 is present to provide a selected discharge pattern. The nozzle 44 may be integrally formed with the stem extension or be a separate unit as is well known to the trade. Furthermore the nozzle 44 as well as the stem extension 42 may be changed to dispense at any selected angle or direction such as the lateral direction as contemplated in U.S. Pat. No. 3,749,290 granted July 31, 1973 and with a discharge pattern of the type contemplated by U.S. Pat. No. 3,843,030 granted on Oct. 22, 1974. The stem extension 42 is also provided with a laterally extending flange 46 which serves as a coupling means for toggle 48 and the stem extension 42 to facilitate the actuation of the pump 10. At the top of the cap 32 appears a cover 50 having a opening 52 which serves as an upper stem extension guide. this cover may be cemented, press fit or otherwise secured in place and as will be evident shortly also serves as a guide for the toggle 48.
The toggle 48 through its coupling with the flange 46 serves to translate lateral or horizontal motion into vertical or reciprocating motion of the stem extension 42, the plunger 16 and consequently the operation of the pump 10. For such purposes, one end of the toggle 48 includes a finger engaging actuator or button 54 which serves as a trigger which may be engaged and actuated by any finger including the thumb or forefinger. Extending inwardly from the trigger 54 are a pair of flanges 56 and 58 which serve as guides which are disposed between and engage with surfaces of the cover 50 and partition 38 to assure proper lateral movement of the trigger 54 and operation of the pump actuating system 14. The toggle 48 further includes two sections 60 and 62 of substantially planar configuration that are integrally and hingedly connected to one another by hinge 64. Section 62 is hingedly connected to the trigger 54 by hinge 66 while the free end 68 of section 60 is disposed in an accommodating recess 70 or otherwise secured to the adjacent surfaces of the cap 32. An elongated slot 72 extends into both sections 60 and 62 for reception of the stem extension 42 and non-interference with the operation of the toggle 48 and the vertical reciprocation of the stem extension 42.
In operation, the pump will initially assume its "at rest" position as shown in FIGS. 3 and 4 with the toggle sections 60 and 62 slightly flexed downwardly to avoid locking of the sections. In this position it will be assumed that the pump is primed with material to be dispensed in the pump chamber 18 and the plunger 15 and its coupled stem extension 42 in their respective uppermost extended positions. When it is desired to dispense the container product the trigger 54 is engaged and by suitably applied finger pressure is moved horizontally or inwardly as the case may be to the disposition of parts shown in FIGS. 5 and 6 during which movement the material in the pump chamber 18 is dispensed out through the nozzle 44. Towards this end, the toggle sections 60 and 62 will pivot towards one another about the hinge 64 and in so doing and through the engagement of the sections with flange 46 will shift the plunger extension downwardly to reciprocate the plunger 16 in a downward direction to cause reduction of the pump chamber 18 and consequent discharge of the material therein. Upon release of the trigger 54 the reverse action takes place, with the plunger 16 and coupled stem extension 42 being shifted upwardly and the toggle 48 returned to its "at rest" position. During this movement, material in the container 12 will be drawn into the pump chamber 18 for the next pumping stroke. In this connection, the pump actuating system 14 and particularly the toggle 48 need only be actuated in a similar manner to cause further reciprocation in a vertical direction of the plunger 16 and consequent operation of the pump 10.
Although several somewhat preferred embodiments of the invention have been disclosed and described in detail herein, it should be understood that this invention is in no sense limited thereby and its scope is to be determined by that of the appended claims.
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|U.S. Classification||222/207, 222/321.8|
|Cooperative Classification||B05B11/3029, B05B11/3056|
|European Classification||B05B11/30H3F, B05B11/30E5|